Recent Posts

Pages: [1] 2 3 ... 10
1
Acurite Access Software / Re: Acurite Include code for UV sensor on WU
« Last post by Bashy on Today at 12:49:12 AM »
It is included but by all accounts theres issues with the code at present
2
AcuRite Weather Stations / Re: Atlas Tear-Down Photos
« Last post by Bashy on Today at 12:22:49 AM »
I cant believe thats all thats holding it to the pole, does anyone have theirs on a mast at 10m? I wouldnt trust that on my mast (its got a 40mm top) i would want that more than hand tight but ive seen what happens in that scenario :/  I am gonna assume that these are not really for mounting to spec?
3
Davis Instruments Weather Stations / Re: How to test Super Cap?
« Last post by AA1ZA on Today at 12:14:20 AM »
AA1ZA, why not go ahead and test powering the SIM externally?

And is your data now available for us to see?  Somewhere?

You should be able to see my logged data of today on pwsweather.com if you searched for station, 'AA1ZA'.   It ran from 2 am until about 6 pm when I took it off the air again for further testing.

First things first:   I think you were dead on when you said earlier that I didn't seem to have a charging problem, but rather an excessive current draw issue.   

Today the station enjoyed much better radiation and this evening I managed to catch it just before sunset.  I set off to measure the supercap voltage first and it was sitting at a healthy 2.35 V.   From the time that I disconnected the solar panel until the supercap was drained down to 0.5V, was maybe just over 30 mins.   I could literally see it "bleeding to death"...

Then it dawned on me:  My misjudgment of the decimals!   I drew an incorrect conclusion based on an assumption that the 20 mA cyclic draws that mine exhibits, correlated with Davis' stated specs.   That is not the case.   Davis actually said, 0.14 mA (140uA); not 14 mA...  which means that that's a totally different story then!   I sure do have a serious current draw issue at hand...

With that, I looked the board over one more time and noticed two other electrolytic caps (the last of the DIY repairs that I was still willing to attempt).   I replaced those too, but alas, to no avail - it still did the same thing...

Having a better appreciation now for the magnitude of excess current that mine draws, I'm not so sure anymore about turning a blind eye to the problem by simply throwing external DC at it.  I think I should rather bite the bullet and send it in for an RMA repair.   (That would put me $285 in total into the deal to date).

EDIT:  Btw, while I was at it this evening, I flicked the 4th DIP switch and the LED did blip around every 2.5 secs.
4
You need 10X accuracy to verify that it meets 1X accuracy.
Thank you. For the life of me, I couldn't think of how to articulate that thought.
5
Davis Instruments Weather Stations / Re: How to test Super Cap?
« Last post by dalecoy on Today at 12:04:41 AM »
Quote
That is why I am hoping that someone that owns one of these can help me out.  I don't have one, just a picture and a poor one at that!

They painted the PCB with some kind of resin.  On my board that IC is covered so thick that there are even tiny bubbles embedded, making it impossible to read anything off of the top of it.

That's to protect it from the weather, which (of course) makes sense. 
6
The different ways of power supplying for cabled/wireless ISS doesn't affect its data collection on wind data.

True, provided that the wind data consists of:
Dry (passive) contact closure for wind velocity; and
Dry (passive) simulation of a variable resistance for wind direction.

The original description of wind speed was "a passive switch signal source" - but the word "source" is confusing.

I note that the description of the wind direction was "source output 0-3VDC" - which is not the same as a variable resistance.  Of course, perhaps there is a language translation difficulty.

Again, I'm not saying there's a problem.  And I don't know what circuitry is in the ultrasonic anemometer to provide a contact closure and a variable resistance.  I just understand that it's not exactly easy to do that in an actively-powered instrument, under all conditions of grounding and power supply sources.
7
Davis Instruments Weather Stations / Re: How to test Super Cap?
« Last post by AA1ZA on Yesterday at 11:25:53 PM »
Quote
That is why I am hoping that someone that owns one of these can help me out.  I don't have one, just a picture and a poor one at that!

They painted the PCB with some kind of resin.  On my board that IC is covered so thick that there are even tiny bubbles embedded, making it impossible to read anything off of the top of it.   
8
You need 10X accuracy to verify that it meets 1X accuracy.
9
 :arrow: For Tuesday - October 23, 2018 !

   =D>
10
AcuRite Weather Stations / Re: Acurite is blowing it
« Last post by Jstx on Yesterday at 10:06:04 PM »
What is up with the strange cloud formations? Is that an air show?

USAF Thunderbirds, performing at the New York International Air Show back in September.  I believe that they were drawing a heart in that maneuver if the newspaper was correct, but I can't say for sure since I'm not willing to pay for a ticket when I get this kind of show from my back deck:


Both the Thunderbirds and Blue Angels form up into their formations for their next easterly passes right over my house whenever they perform at the airshow.....

I spent much of my life a few blocks from the Confederate Air Force HQ (now renamed, expanded, and moved to other airports).
We would see not only the BA's and T'birds, but all those older warbirds zooming over the house at 500-2000 ft on final, absolutely awesome.
Plus they would practice all the week before AirSho weekend (not good if working deep nights, urg...). Still bought tickets for the family, wanted my kids to get the 'closeup' experience (we would anyway as some acquaintances were top CAF brass).
You ain't lived until Fifi (one of a two still flying B-29's) or a wing of B-17's shakes the leaves off of your big ol' Bo tree and you count the bomb bay rivets. Man, that was forty, almost fifty years ago, and Fifi is still flying (been in it and many of the others).
HRL was a big WWII AAF training base (nav, gunnery, A&P mostly), with several outlying aux fields. When you taxied out, the taxiways still had the faint WWII aircraft 'type' parking assignment markings along them. All changed now.

https://en.wikipedia.org/wiki/Commemorative_Air_Force

https://en.wikipedia.org/wiki/Boeing_B-29_Superfortress#Surviving_aircraft
Pages: [1] 2 3 ... 10